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Residual oil hydrogenation treatment and catalytic cracking combined processing method

A technology for catalytic cracking and residual oil hydrogenation, applied in hydrotreating process, petroleum industry, treatment of hydrocarbon oil, etc., can solve the problems of increased investment cost, large heat loss, reduced total yield, etc., so as to improve the utilization rate, The effect of reducing equipment investment and reducing heat exchange equipment

Active Publication Date: 2012-01-11
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, it is also necessary to set up a more sophisticated fractionation system to fractionate naphtha and diesel fractions, which increases investment costs; due to heat exchange in the process, heat energy loss is more; at the same time, both hydrotreating units and catalytic cracking units have diesel products, which are relatively The overall yield of gasoline and gas products will be reduced

Method used

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  • Residual oil hydrogenation treatment and catalytic cracking combined processing method
  • Residual oil hydrogenation treatment and catalytic cracking combined processing method
  • Residual oil hydrogenation treatment and catalytic cracking combined processing method

Examples

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Embodiment

[0033] This example adopts the combined method of residual oil hydrotreating and catalytic cracking provided by the present invention, and the hydrotreated liquid phase product fractionates light components and heavy components, and the cut point is 350°C, wherein the light components are directly promoted by catalytic cracking The first-stage feed inlet at the bottom of the tube enters the reactor and contacts with the high-temperature regenerated catalyst. The heavy component is used as the second-stage feed of the riser, and enters the catalytic cracking riser reactor from the second-stage feed inlet; the second-stage feed inlet Above the first-stage feed, the height from the first feed port accounts for 1 / 10 of the total height of the riser; the catalytic cracking reaction effluent is separated into dry gas, liquefied gas, and gasoline fractions, and the fraction above diesel oil is no longer separated. After filtration, it is recycled to the residual oil hydrogenation unit...

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Abstract

The invention discloses a residual oil hydrogenation treatment and catalytic cracking combined processing method, which comprises: performing the hydrogenation reaction of a residual oil raw material in the presence of hydrogen and a hydrogenation treatment catalyst, and performing gas-liquid separation of efflux of hydrogenation reaction, wherein a gas phase is circularly used in a hydrogenation reaction, and a liquid phase is fractioned to form a light component and a heavy component; allowing a light component to enter a reactor from the bottom of a catalytic cracking riser reactor, allowing a heavy component to enter the reactor as secondary feed of the catalytic cracking riser reactor and performing a catalytic cracking reaction; and separating a dry gas, a liquefied gas and a gasoline fraction from efflux of a catalytic cracking reaction, wherein the fractions of diesel are not separated and enter a residual oil hydrogenation device after filtration. Compared with the prior art, the method can produce high-octane number gasoline and high-added-value liquefied gas to a maximum degree; meanwhile, the method can fully utilizes reaction heat and reduces production energy consumption.

Description

technical field [0001] The invention relates to a method for lightening residue oil, specifically a process for producing high-octane gasoline products by organically combining residue oil hydrotreating and catalytic cracking and using residue oil as a raw material. Background technique [0002] As crude oil becomes heavier and worse, more and more residues need to be processed. The processing of heavy and residual oil not only needs to crack it into products with low boiling point, such as naphtha, middle distillate oil and vacuum gas oil, etc., but also to increase their hydrogen-carbon ratio, which requires decarbonization or Hydrogenation method to achieve. The decarbonization process includes coking, solvent deasphalting, heavy oil catalytic cracking, etc.; hydrogenation includes hydrocracking, hydrofining, etc. The hydrogenation method can not only hydrogenate and convert residual oil, improve the yield of liquid products, but also remove heteroatoms, which is benefi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G69/00
Inventor 蒋立敬张学萍胡长禄韩照明初人庆矫德卫
Owner CHINA PETROLEUM & CHEM CORP
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